package com.atguigu.tingshu.album.service.impl;

import cn.hutool.core.collection.CollUtil;
import com.alibaba.fastjson.JSONObject;
import com.atguigu.tingshu.album.mapper.*;
import com.atguigu.tingshu.album.service.BaseCategoryService;
import com.atguigu.tingshu.common.result.Result;
import com.atguigu.tingshu.model.album.*;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import io.swagger.v3.oas.annotations.Operation;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.GetMapping;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

@Service
@SuppressWarnings({"all"})
public class BaseCategoryServiceImpl extends ServiceImpl<BaseCategory1Mapper, BaseCategory1> implements BaseCategoryService {

	@Autowired
	private BaseCategory1Mapper baseCategory1Mapper;

	@Autowired
	private BaseCategory2Mapper baseCategory2Mapper;

	@Autowired
	private BaseCategory3Mapper baseCategory3Mapper;

	@Autowired
	private BaseCategoryViewMapper baseCategoryViewMapper;

	@Autowired
	private BaseAttributeMapper baseAttributeMapper;


	@Override
	public List<JSONObject> getBaseCategoryList() {
        //1.创建用来保存所有"1级"分类List集合
		List<JSONObject> list = new ArrayList<>();
		//2.查询所有分类视图，共计得到401条记录
		List<BaseCategoryView> allCategoryViewList = baseCategoryViewMapper.selectList(null);

		//3.处理1级分类
		//3.1 对所有分类视图使用Stream流进行分组得到Map<1级分类ID，List<"1级分类对象">>，分组条件：category1Id
		Map<Long, List<BaseCategoryView>> map1 = allCategoryViewList
				.stream()
				.collect(Collectors.groupingBy(BaseCategoryView::getCategory1Id));

		//3.2 遍历Map<分组ID，List<"1级分类对象">>，封装"1级分类JSON对象"
		for (Map.Entry<Long, List<BaseCategoryView>> entry1 : map1.entrySet()) {
			//3.2.1 封装"1级分类JSON对象"
			JSONObject jsonObject1 = new JSONObject();
			//3.2.2 获取"1级分类ID"
			Long category1Id = entry1.getKey();
			//3.2.3 获取"1级分类名称"
			String category1Name = entry1.getValue().get(0).getCategory1Name();
			//3.2.4 封装一级分类对象中属性
			jsonObject1.put("categoryId", category1Id);
			jsonObject1.put("categoryName", category1Name);
			//4. 处理2级分类
			//4.1 创建保存"2级分类"List集合
			List<JSONObject> jsonObject2List = new ArrayList<>();
			//4.2 对"1级分类列表"根据二级分类ID进行分组
			Map<Long, List<BaseCategoryView>> map2 = entry1.getValue()
					.stream()
					.collect(Collectors.groupingBy(BaseCategoryView::getCategory2Id));

			//4.3 遍历二级分类Map，创建二级分类JSON对象
			for (Map.Entry<Long, List<BaseCategoryView>> entry2 : map2.entrySet()) {
				//4.3.1 创建二级分类JSON对象
				JSONObject jsonObject2 = new JSONObject();
				//4.3.2 获取二级分类ID
				Long category2Id = entry2.getKey();
				//4.3.3 获取二级分类名称
				String category2Name = entry2.getValue().get(0).getCategory2Name();
				//4.3.4 封装二级分类对象中属性
				jsonObject2.put("categoryId", category2Id);
				jsonObject2.put("categoryName", category2Name);
				jsonObject2List.add(jsonObject2);
				//5. 处理3级分类
				//5.1 创建保存"3级分类"List集合
				List<JSONObject> jsonObject3List = new ArrayList<>();
				//5.2 遍历"二级分类"集合，创建三级分类JSON对象
				for (BaseCategoryView baseCategoryView : entry2.getValue()) {
					//5.2.1 创建3级分类JSON对象
					JSONObject jsonObject3 = new JSONObject();
					//5.2.2 获取三级分类ID
					Long category3Id = baseCategoryView.getCategory3Id();
					//5.2.3 获取三级分类名称
					String category3Name = baseCategoryView.getCategory3Name();
					//5.2.4 封装三级分类对象中属性
					jsonObject3.put("categoryId", category3Id);
					jsonObject3.put("categoryName", category3Name);
					//5.2.5 将三级分类对象添加到二级分类对象中
					jsonObject3List.add(jsonObject3);
				}
				//5.3 将三级分类集合加入到二级分类对象"categoryChild"中
				jsonObject2.put("categoryChild", jsonObject3List);
			}
			//4.4 将二级分类集合加入到一级分类对象"categoryChild"中
			jsonObject1.put("categoryChild", jsonObject2List);
			//3.3 将"1级分类JSON对象"添加到List集合中
			list.add(jsonObject1);
		}
		return list;
	}

	@Override
	public List<BaseAttribute> getAttributesByCategory1Id(Long category1Id) {
		return baseAttributeMapper.getAttributesByCategory1Id(category1Id);
	}

	@Override
	public BaseCategoryView getCategoryView(Long category3Id) {
		return baseCategoryViewMapper.selectById(category3Id);
	}

	/**
	 * 根据一级分类Id查询置顶7个三级分类列表
	 *
	 * @param category1Id
	 * @return
	 */
	@Override
	public List<BaseCategory3> findTopBaseCategory3(Long category1Id) {
		//1.根据1级分类ID查询该1级分类下二级分类ID列表
		List<BaseCategory2> baseCategory2List = baseCategory2Mapper.selectList(
				new LambdaQueryWrapper<BaseCategory2>()
						.eq(BaseCategory2::getCategory1Id, category1Id)
						.select(BaseCategory2::getId)
		);
		if (CollUtil.isNotEmpty(baseCategory2List)) {
			List<Long> category2IdList = baseCategory2List.stream()
					.map(BaseCategory2::getId).collect(Collectors.toList());
			//2.根据二级分类ID列表查询置顶前7个个三级分类列表
			LambdaQueryWrapper<BaseCategory3> queryWrapper = new LambdaQueryWrapper<>();
			queryWrapper.in(BaseCategory3::getCategory2Id, category2IdList);
			queryWrapper.eq(BaseCategory3::getIsTop, 1);
			queryWrapper.orderByAsc(BaseCategory3::getOrderNum);
			queryWrapper.last("limit 7");
			return baseCategory3Mapper.selectList(queryWrapper);
		}

		return null;
	}

	/**
	 * 查询1级分类下包含所有二级以及三级分类
	 *
	 * @param category1Id
	 * @return 一级分类对象
	 */
	@Override
	public JSONObject getBaseCategoryListByCategory1Id(Long category1Id) {
		//1.处理1级分类
		//1.1 根据1级分类ID查询分类视图得到所有"1级分类"列表
		List<BaseCategoryView> baseCategory1List = baseCategoryViewMapper.selectList(
				new LambdaQueryWrapper<BaseCategoryView>()
						.eq(BaseCategoryView::getCategory1Id, category1Id)
		);
		if (CollUtil.isNotEmpty(baseCategory1List)) {
			BaseCategoryView baseCategoryView = baseCategory1List.get(0);
			//1.2 创建1级分类JSON对象
			JSONObject jsonObject1 = new JSONObject();
			//1.2.1 封装1级分类ID
			jsonObject1.put("categoryId", baseCategoryView.getCategory1Id());
			//1.2.2 封装1级分类名称
			jsonObject1.put("categoryName", baseCategoryView.getCategory1Name());

			//2.处理2级分类
			//2.1 对"1级分类列表"按二级分类ID进行分组，得到Map
			Map<Long, List<BaseCategoryView>> map2 = baseCategory1List
					.stream()
					.collect(Collectors.groupingBy(BaseCategoryView::getCategory2Id));

			//2.2 遍历Map，创建二级分类JSON对象集合
			List<JSONObject> jsonObject2List = new ArrayList<>();
			for (Map.Entry<Long, List<BaseCategoryView>> entry2 : map2.entrySet()) {
				//2.2.1 创建二级分类JSON对象
				JSONObject jsonObject2 = new JSONObject();
				//2.2.2 封装二级分类ID
				Long category2Id = entry2.getKey();
				//2.2.3 封装二级分类名称
				String category2Name = entry2.getValue().get(0).getCategory2Name();
				jsonObject2.put("categoryId", category1Id);
				jsonObject2.put("categoryName", category2Name);
				//3.处理3级分类
				//3.1 创建3级分类JSON对象集合
				List<JSONObject> jsonObject3List = new ArrayList<>();
				//3.2 遍历"2级分类列表"，封装三级分类对象
				for (BaseCategoryView categoryView : entry2.getValue()) {
					//3.2.1 创建3级分类JSON对象
					JSONObject jsonObject3 = new JSONObject();
					//3.2.2 封装3级分类ID
					jsonObject3.put("categoryId", categoryView.getCategory3Id());
					//3.2.3 封装3级分类名称
					jsonObject3.put("categoryName", categoryView.getCategory3Name());
					jsonObject3List.add(jsonObject3);
				}
				//2.3 将三级分类集合加入到二级分类对象"categoryChild"中
				jsonObject2.put("categoryChild", jsonObject3List);
				jsonObject2List.add(jsonObject2);
			}
			//2.3 将三级分类集合加入到二级分类对象"categoryChild"中
			jsonObject1.put("categoryChild", jsonObject2List);
			return jsonObject1;
		}
		return null;
	}

}
